CONSTITUTIVE ASPECTS OF AN EMBANKMENT WIDENING PROJECT

Two stress-strain models are used to backcalculate deformations for an embankment widening of a road on soft soil (a near-normally consolidated peat and clay layer) in Rotterdam, the Netherlands: the elastic-plastic Mohr-Coulomb model and a Cam-Clay type model. In order to demonstrate the need of plasticity models, the paper begins with some preliminaries on constitutive modelling and a review of non linear elasticity models. Subsequently, the Mohr-Coulomb model and the Cam-Clay model are considered. Attention is focussed on the stress-strain relationship for various types of loading. For the deformation calculations stiffness parameters based on compression and swelling index were chosen in such a way that both models predict about the same vertical displacements. However, the Cam-Clay model gives smaller horizontal displacements, which actually agree with the field measurements. This indicates that the choice of a constitutive model can be of major importance to predict correct deformations for near-normally consolidated soils. For the covering abstract of the conference see IRRD 863640.

  • Availability:
  • Corporate Authors:

    AA Balkema

    P.O. Box 1675
    Rotterdam,   Netherlands  BR-3000
  • Authors:
    • Brinkgreve, RBJ
    • VERMEER, P A
    • Vos, E
  • Publication Date: 1994

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00662185
  • Record Type: Publication
  • Source Agency: DIENST WEG- EN WATERBOUWKUNDE (DWW)
  • ISBN: 90-5410-366-3
  • Files: ITRD
  • Created Date: Jul 28 1994 12:00AM